why need a txt message when then lease itself sinks him.unless you or him crossed out that part and signed next to it no to inforce the 30 day clause he stuck paying you back the deposit.so you dont get screwed paying for new lock send a register letter to him setting up a date that you meet at the local pd or have the pd there at the apt to turn the keys over to him.dont need him starting a fight or saying you never turned the keys in and you have to pay for a new lock.